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Consider the following data. We want to monitor the forecasts. Period.Demand.Forecasts .
Consider the following data. We want to monitor the forecasts.
Period..............Demand............Forecasts
......1...................263....................--
......2...................252....................263
......3...................289....................252
......4...................287....................289
......5...................307....................287
Calculate the UCL and LCL for the appropriate control chart?
Calculate the cumulative error, MAD, and tracking signals.
Error of period 2
Your answer
Error of period 3
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Error of period 4
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Error of period 5
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Overal MSE:
Your answer
UCL to monitor the magnitude of the errors
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LCL to monitor the magnitude of the errors
Your answer
Are the errors in control?
Yes
No
Cumulative error up to period 2
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Cumulative error up to period 3
Your answer
Cumulative error up to period 4
Your answer
Cumulative error up to period 5
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MAD up to period 2
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MAD up to period 3
Your answer
MAD up to period 4
Your answer
MAD up to period 5
Your answer
Tracking signal of period 2
Your answer
Tracking signal of period 3
Your answer
Tracking signal of period 4
Your answer
Tracking signal of period 5
Your answer
Based on your tracking signals, are the forecasts biased?
Yes
No
